Eudolph vollschwitz



(ModeL) R. VOLLSGHWITZ, Device for Securing Look: Gases. No. 243,331. Patented June 21,1881.

I awed, 1 21/2 2% UNITED STATES PATENT OFFICE.

RUDOLPH VOLLSOHWITZ, OF ELIZABETH, NEW JERSEY.

DEVICE FOR SECURING LOCK-CASES.

SPECIFICATION forming part of Letters Patent No. 243,331, dated June 21, 1881.

Application filed October 20, 1880. (Model) T 0 all whom it may concern Be it known that I, RUDOLPH VOLLSOHWITZ, of Elizabeth, in thecounty of Union, and in the State of New Jersey, have invented certain new and useful Improvements in Locks; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, making a part of this specification.

This invention relates to certain improvements in looks of that class which are designed to be set in a recess formed in the edge of a door or other article to which the lock is to be secured; and it has for its object to furnish a novel means whereby the lock-casing is securely fastened inits recess in the door or other article. This object I attain by the mechanism and devices illustrated in the accompanying drawings, in which Figure 1 is a side elevation of myimproved lock; Fig. 2, a longitudinal vertical section, showing the mechanism for securing the easing in the recess for its reception, and also the mechanism for operating the bolts. Fig. 3 is a sectional view, showing the mechanism for securing the lock-casing. Fig. dis a detached view of the bolt-operating mechanism; and Figs. 5 and 6 are sectional views, showing modifications of the lock-fastening mechanism and the key.

The letterAindicates the lock-easing,which, in the present instance, is cylindrical, althoughitmay be of any other convenient shape. The said casing is made preferably in two parts for convenience in adjusting the works.

The letter 13 indicates the bolt, consisting of two pawls, a b, pivoted together at c, and extending'through a slot, d, at the forward end of the lock-casin g, theforward ends of the said pawls being provided with lateral hooks e. The pawl ahas a rearward extensiomg, which is pivoted to the face of a disk, E, secured to the rotating barrel H of the lock,which is journaled in openings I in opposite sides of the lock, andis provided with the usual key-recess, K. The said barrel is provided on opposite sides with transverse slots, in which the arms of a spring, L, are adapted to engage, the said spring being fastened in the lock-casing by means of an eye, h, setting over a pin, l. The arms of said spring embrace the barrel of the lock with sufficient force to hold the bolt in position when locked or unlocked, but to yield and permit the barrel to turn to allow the bolt to be shifted. Thelock-casin g, near its forward end, is provided with an inwardly-extending lug, it, over which the straight edge of the pawl. a travels, and which serves the purpose of shifting said pawl, and with it the pawl b, as the pivot which connects the two pawls passes to the front or rear of said lug, the pawl abeing slotted at i to permitthe pawl to rise and fall properly on the pivot. The upper edge of the pawl b is provided with a detent, m, which engages either side of the forward edge of the slot in which the pawls work, to fix the bolt in a locked or unlocked position against accidental displacement.

The letter M, Figs. 3 and 5, indicates two slides pivoted to the inner end of a longitudinally-movable bar or rod, N, the forward end of which passes through arecess, n, in the forward end of the lock-casing, near its edge, the outer extremity of the said rod being bent laterall y, as indicated by theletterm, and adapted to set in the front of the recess a, which is suitably formed, as indicated in Fig. 5, so as, to limit the rearward motion of the bar, but permit it to be slightly projected forward from the casing. The said slides are curved and pointed or sharpened at their outer ends, and pass laterally through apertures or slots 12 in the sides of the casingin such manner as to be projected outwardly or drawn inwardly as the rod N is reciprocated backward or forward.

The letter r indicates a spiral spring surrounding the rod N, the object of which is to keep the slides projected outwardly. The slides serve to take into the wood at the sides of the. recess in which the lock is placed, and thus secure it in said recess. In the modification shown in Fig. 6 slides R are employed. These slides extend through the slots in the case, and their outer ends are serrated, as shown, so as to take into the wood. The said slides are slotted obliquely in opposite directions, as indicated by the letter s, through which a pin, t, on the bar N projects, by which the slides are projected or withdrawn laterally. The slides In combination with the casing A, the laterally-projecting slides M, extending through the apertures 19 in the sides of the casing, and the spring-actuated rod N, provided with a pin, m, working in a slot, at, to project the slides, substantially as and for the purposes specified.

In testimony that I claim the foregoing I have hereunto set my hand this 24th day of September, 1880.

RUDOLPH VOLLSOHWITZ.

Witnesses CARL. BERGBAUER, MARIE BERGBAUER. 

